Fluid-brake for recoil-guns.



No.754,see.

ERNST KARL ROTHE, OF BISENACH,

GERMANY( 0F reHnzIEuorABmK EISENACH, on nisnsace: censurer.

FLUiD-'BRAKE Fon nEoiL-euNs.

srncmcATi'oN forming part of Lemmi Patent No. 754,896, asias 15, 1904..'

Application Sled October 3, 1903.

Toall whom) it may concern.-

Beitknownthat I, ERNST KARL Ro'mn, en' ginecr, a' subject of the Grand Duke of Saxe- Weim'ar, residingat Eisenach, in the Grand Duchy of Saxe-N eimer, German Em pire, have invented certain new and useful Improvements in Fluid-Brakes for Recoil-Gunspt which the following is a specification.`

My invention relates'to n iiuid-bralre for rel coil-guns of a. construction that the. putting in and taking out of the recoil-spring is facilitated.

ln a Huid-brake for'recoil-guns of the ordinary construction it is necessary when killing the same to take out the piston-rod, and consequently to detach the brake-cylinder from the front closing-cap to remove the pistonrod, and after filling to reestablish connection in the. reverse way. A great disadvantage follows such types' of brake-cylinders in the eld, as when t-lie piston-rod is removed its packing is liable to become dusty and dirty and'there isdanger of some of the glycerin or liquid filling being lost. In order, therefore, to enable the brake-cylinder to be coneniently filled, the screw-threaded tensionnut, which gives the preliminary tension required to the spring, is connected according to this invention direct-ly to the rear of the gun, the brake-cylinder proper being provided at the back with a hollow' screw-threaded socket, while the tension-nutY is also made hollow at the back and the hollowsoclet of the brake-cylinder closed by a detachable screw-plug.

A construction according to my invention is illustrated in the accompanying drawings, in which- Figure 1 is a side View, partly in section, of a gun on its carriagevin position ready for iiring, the spring being held in preliminary tension. Fig. 2 shows a. sectional view of tension device screwed out-that is to say, with the spring slackened. Fig. 3 shows in longitndinal section the arrangement of the rear end of the brake-cylinder and of the tension-nut on an enlarged seele.

The tension-nut a is in this construction arngainst-'longitudinal both cranks nf in 0poompleteiy, the brel ranged at the rear end of the brakecylinder Serial No. 175,683. (No medals and mounted with extremity-ina 5b downward projection er log of the gun, vso as to be easily rotaterr-e, while it 1s`prevented virent. The nut d,

which rests against the rear surface of the lug b, is secured against unsrrewing bya locking` 55 screwe and serves to the turnmgof the.

'he mit (l serves at f tension-nut in the luf thesame time to re Y re a crankhandle f for turning the tension-ner. The cylindrical ten* sionnut is provided an internal screw: 6o'

thread, into which is sfr-eared the extension y of the brake-cylinder il, the spring i are formed by two washers, of which the rear one-, s secured tothe spring casing or carriage a lug", while the front washer' l, is detnchahly secured to the front end o the brake-cylinder i. The piston-rod heed se of the brake is detachably secured to the foi-ling or detachable front pressure-plate n of the casing. The 7.0 front washer l 1s provided with holes for re` ceiving on a crank-hei` e o. l 1n order to take on: me spring, the head of the brake-rod is released, the pressure-plate n folded hack, and the means of the crank. eine tension-nut a being. turnedby means of t7 usnkf, mounted en the nut d. This arrzs... nent enables a much quicker slackening o. spring by turning directions.

l nut areinains on the i sion g of the brakee r is screwed out until the nut has been 7ieri-eased. As thetension-nut a is held in and the brakecylinder extension ier always retains casing 1:. The erected by simply and the tensionits horizontal posit@ putting in of the spr; pushing it over the c vt nut, whereupon after if' cured the frontwashe i s. opposite direction to the brake-cylinder es the nuta and the spr imi-ning it in the the removal, Y is screwed into preed, wheres by a smooth cylindrfei svrfeee. is produced, .95

as the tensionnut sal -7i-e c viindcr have theseme outside dirimere the extension g 1s screwed into thev te; -n-nni to suchen ex- .,Jsoe To M3559,

The abutments for ttie in frontof the 65 The 80 he screwed out S5 lng put on and se- 99 A tent as not to leave-any interval between the Y inner end cylinder and the outer end of the tension-nut. As the cylinder extension g is provided with a perforation jp' going' through'v I0 Having now particlarly described and as*- certained the nature of my said invention and in what manner the saine is tobe performed, l declare that what I claim isl. A Huid-brake for recoil-gu ns, comprising 15 a brake-cylinder pro'vided with a'hollow'externally-threaded reduced portion, a hollow socket engaging said. reduced portion a dctachable plug closing said cylinder at theend of said reduced portion whereby the cylinder 20 may be filled on removing the dplug\, said hollow .socket 'otatalily .associate with a lug on the rear of said gun, a recuperatingspririg surrounding said brakefcylinder, and a tubu' lar casing around said .spring.

der, va hinged vcap upon one end of said. casbination of 'a gun-carriage, a gun having a.

'2. n. a uid-brake for recoil-guns, the 'comi- 25 I.

lug thereon, a hollow Socke.; rotatably associated with said lug, a bralecylinder having a hollow externally-threaded reduced portion closed by a screwlplug at the end thereof,

said reduced portionv engaging said hollow socket, an external collar o'n said brake-cylinf and 'nearing atone end against the collar on said cylinder, a casing around said spring'and attached to thegun-carriage, a collar arranged in said casing against which the other end of said spring bears, a stationarypiston and piston-rod extending through said brake-cylining, and'means forlocking said cap to said piston-rod. y Y

1n testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

der, a spring surrounding said brake-cylinder 

